Unlock instant, AI-driven research and patent intelligence for your innovation.

Pointing and control device and method for a computer system

a computer system and pointing control technology, applied in the direction of static indicating devices, instruments, navigation instruments, etc., can solve the problems of increasing the number of instruments, increasing the noise, and increasing the offset and noise of acceleration and angular velocity signals, and interrupting the use of the pointing devi

Active Publication Date: 2013-04-02
STMICROELECTRONICS SRL
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]The present disclosure provides a pointing and control device, such as a handheld device, and a pointing and control method for a computer system that will reduce or be free from the limitations described above.

Problems solved by technology

The operations of integration lead, however, to drawbacks, in particular because inevitable offsets and noise present in the acceleration and angular velocity signals add up and increase over time.
The precision of control tends to decrease, and in order to eliminate temporarily the errors, periodic operations of recalibration or reset are necessary, which can temporarily interrupt use of the pointing device.
Following upon reset events and upon elimination of errors, sudden deviations may also occur, which in any case render control problematical and far from precise.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pointing and control device and method for a computer system
  • Pointing and control device and method for a computer system
  • Pointing and control device and method for a computer system

Examples

Experimental program
Comparison scheme
Effect test

third embodiment

[0051]the disclosure is illustrated in FIG. 7. In this case, a computer system 200 includes a computer 202 and a pointing and control device 203, which are provided, respectively, with a processing unit 205 and a control unit 210. The first processing module 17 and the second processing module 18 both reside in the processing unit 205, whilst the control unit 210 carries out sampling of the magnetic-field signals SMX′, SMY′, SMZ′ and of the acceleration signals SAX′, SAY′, SAZ′.

fourth embodiment

[0052]According to the disclosure, (illustrated in FIGS. 8 and 9) a computer system 300 includes a computer 302 and a pointing and control device 303, equipped with a processing unit 305 and a control unit 310, respectively.

[0053]A processing module 317, residing in the control unit 310, receives the magnetic-field signals SMX′, SMY′, SMZ′ and the acceleration signals SAX′, SAY′, SAZ′ from the magnetometer 11 and the accelerometer 12 and uses them for determining a pitch angle α1, a roll angle α2, and a yaw angle α3 of the body 9 of the pointing and control device 303 (FIG. 9). The accelerometer 12 is used as inclinometer for determining the pitch angle α1 and the roll angle α2 with respect to the gravitational-field vector G, by means of the acceleration signals SAX′, SAY′, SAZ′. In greater detail, the acceleration signals SAX′, SAY′, SAZ′ are filtered for extracting the d.c. components, which are correlated to the components of the gravitational-field vector G according to respect...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A pointing and control device for a computer system, the device having a body that can be maneuvered by a user; and an inertial sensor fixed to the body for supplying first signals correlated to the orientation of the body with respect to a gravitational field acting on the inertial sensor. The device moreover includes a magnetometer fixed to the body for supplying second signals correlated to the orientation of the body with respect to the Earth's magnetic field acting on the magnetometer and processing modules for determining an orientation of the body in an absolute reference system, fixed with respect to the Earth's magnetic field and gravitational field on the basis of the first signals and second signals.

Description

BACKGROUND[0001]1. Technical Field[0002]The present disclosure relates to a pointing and control device and a pointing and control method for a computer system.[0003]2. Description of the Related Art[0004]As is known, in order to improve the interaction of a user with a computer system, use of three-dimensional control and pointing devices has been invoked. Unlike typical two-dimensional control and pointing devices, such as a mouse, joy-stick or track-ball, just to mention some examples, three-dimensional devices detect their own displacements or rotations according to three distinct independent axes and hence enable a greater freedom of control. For example, three-dimensional devices can be used for simulating objects that are normally manipulated by the operator during use, such as pointers for presentations or sports implements in the case of videogames.[0005]The movements are in general detected by gyroscopes and accelerometers. In particular, accelerometers are used to determi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(United States)
IPC IPC(8): G09G5/00G06F3/02G06F3/033G01C17/38G06F3/0346G06F3/038
CPCG01C21/165G06F3/0346G06F3/0383G01C21/1654
Inventor PASOLINI, FABIOBENDISCIOLI, PAOLOVOCALI, FRANCESCOBIGANZOLI, FABIO
Owner STMICROELECTRONICS SRL